Protector mechanism for looms



sept. v27,1927'.

E, LANE PROTECTOR MECHANISM FOR LOOMS Filed Dec. 50. 1924 0 j I unhln. n 7. H \\0 M 5 Y I 1P n l l4 A 7 c I 3H 3 F e 0 2 W Z Patented Sept. 27, 1927.

UNITE-n STATES -Pili'rela-T oir-Fica.

EDWARD L. LANE, OF MOORESVILLE, NORTH CAROLINAa ASSIGNOR QROMPTON i IsrNovvLii's LOOM WORKS, MASSACHUSETTS.

on woac'nsTER, MASSACHUSETTS, convenanten or PROTECTOR- ME'CHANISM- FOR LOOMS.

i Application led December, 1924. Sera'lN. 758,315.` l

This invention relates to smash preventers for looinsand more especially to means forA stopping the loom and releasing the let-olfI simultaneously. y

@ne object of my inventionis toe provide asmash; preventer controlled by. means of' shuttle feelers which pass'rthrough the bindersan-dcoine in direct contact with the shuttle: to; move stopping mechanismk ou-t of knocking ott position when theV shuttle ils properly boxed.

A fur-ther Vobjectqof inyinventioii isf to prov-idel means-whereby the let-off is released to relieve the tensionof the warp threads whenever' the loom is stopped because of iniproper box-.ing of thesliuttlefso vthat if the latter is caught in the shed the warps may yield to pi'eventav smash.

I/Viththese and other objects in vi-ew will appear as the description proceeds, my invention resides in the combination andarrangement of parts hereinafter described and set forth in the claims.

In theA accom anying` drawings,

l. isa si fe elevation. cfa loom having my inventionappliedthereto,

Fig. 2 is a top plan View looking in the direction of arrow Fig. 1,y

Fig. 3 is a vertical sectiontaken on line 3 3v of Fig. 2,`

EigaA 4 isa. fragmentary plan view showing the let-oif leverfand .theu device by which it isreleasedg. l

5'V is rear elevation of a portion of the lay showing a guide for thev knock-ofi' rod',

Fig. 6' is a detail of' the knock-off' block,

^ and F ig. 7 is a detail ofthe swivel mounting for the kno-ckbfl' rod.

Referring. more particularly to Fig. 1 it will be seen that the loom side 10 has mounted thereonwarp beam 11 having; a gear 1'2 which meshes with pinion 1'3 secured to drum 14 which is pivoted on stud 15'. In order toapply friction to the drum 14 for the purpose of tens-ioninfgthe warp I provide a flexible band 16' anchored to some fixed part of the loom as at 17 and havingthe upper end connected, toy turnbuckl'e 18. A link 19'extends from the turnbuckle to an arm 20-which is fastened to lshaft 21, a second link 22 extendingfr'omtl'ie arm 20 to one leg 23 of a-lever' 24` V,which `is pivoted to the loomframe asat 25. Theshafft-21'ex.- tends across the loom to control the warpre= leasingmechanisni at the oppositeend` of the loom...

Inorder to adjust the tension: of the flex,- ifble bands 16`I- provide' a verticalscrew26- mounted-between. bearings 27 and -28- formed v on bracket 29 which is secured in any? ap proved-manner tothe loom side. A support 30 fortlielever 2li-is mountedv on: the screw 26- and maybe movedY up or down turningthe screw 26 by meansV of han-d Wheel 31a The inner end of the support 30 is extended tor provide' a notch 32 inwvhiich the leverf24` norm-ally rests. VVhenf' it is desired to relieve the: friction of thewarp the lever 24'A is. flexed inwardly away from support` 30 and moved downward-ly,` spring 33 z tssistingfin this operation.. Thematter thus far described is of common construction and forms no part of my present. invention.

y improvements f ifelateparticularly to the devices with knock oit the'llooni and reY` lease the warp tension if. the shuttlev is'not properly boxed. Incarrying. out my invention I Iprovide a shaft 40 which extends. across the loom and hasv secured to each'y end. thereofv a lever 41. To the upper endfofeacli lever is pi-votally connected a. shuttle feeler 42 having an extension 43 in engagement with setscrewel by means of' which itmay be adjaisted. 45- having alower arm 46 which isheld aga-instsetscrew 17` by means of spring 48'-,

Depending from the lay 19'` is a bracket having a guide slot 51A to receive the rear end of knocko-if rod 52. The forward end ofthe rod slides through swivel stud 53, the shank 54 of which is somewhat longer than the thickness of the loom side and extends therethrough and is loosely mounted therein. The forward endv ofl the rod 52 has fastened thereto a collar 55 which is held against the swivel stud 53 by means of spring 56' interposed betweenthe stud 53 and a1 vknock off block 57 v(see F i101 7). The blockis adjustably fastened to ie rod' 52by means ofraset screw. In order to prevent the rotation of rod 52 I may? provide the latter with'an upward extensionY 58 which extends through the slot 51 ofthe' bracket 50 to .holdi the same Fastened to shaft 4tOis a lever against any tendency to rotate and I may also provide the block 57 with extensions 59 which lie on each side of the thickened portion 60 of the rod 52. y In this way the block and rod are held against rotation.

Referring to Figs. 2 and 4 it will be seen that when the `levers 4l are in their normal rearward position the block 57 will be `located to the rear ofl a cam face 61 formed on leveri24 and a cam face `62` formedon the lower surface of rod 52 is slightly in advance of the upper end 0f-lever 45. The shipper handle 63 is provided with a deending finger 64 which is'inormally in the pathoflthe block 57 when the-latter moves forwardly.

Inethelnormal operation of the loom, .when

the shuttle is properly boxed, the feelers 42 will` pass throughI the binders 65 (one of which isshown) and one of said feelers will engage the shuttle and be moved forwardly, thereby rocking-the levers 4l from the full line position to the dotted line position shown in Fig. 3; This motion of levers 41 rocks shaft 40, which in turn moves lever 45 under cam face 62 to raise the rod 52V so that detent `66 formed on rod-52 is raised above the lower `portion of the bracket 50 and the lay moves `forwardly without acting upon said rod 52. However, when the shuttle isnotproperlyboxed, the feelers 42 will extend into the boxes without being moved forwardly, the result of which is to leave'the lever 45 in the position indicated in full lines in Fig. 3 and as the lay advances the lower end 67 of the "bracket 50 engages d-etent 66 and movesthe rod 52 forwardly against the action of spring 56. 'As this occurs the block 57 will engage theface 61 to move the lever 24 laterally out of the notch 62 of the support 3() and at the same timeengage fingers 64 to move shipper' 68 to knoclc'off position. The vlet-off lever V24 will immediately fall to the position indicated infdotted lines in Fig.` 3 to releasejthe tension of the warp so that should the lay continue to move after the shipper handle is thrown off and the shuttel is in the shed thebeam will be free to turn so as to prevent a smash. y p 4 `From the foregoing itwill be seen that I have provided a smash preventing meehanism which is dependent for its operation upon thedirect engagement of the shuttle with shuttle feelers to control knock-off mechanism which is normally positioned to stop the loom but whichis moved out of knock-offposition when the shuttle is properly boxed. Y Also it will be seen that I have provided means to release the tension of the warps whenever the loom is stopped bythe improper boxing of the shuttle so that the beam maybe free to turn [and `pay off suHicient warp ,to prevent a sml'ash.`

Also it will be seen that the lever 24 .may

and scope of the inventionand I do not` wish to be limited to the detailsdisclosed.her-ein but what I claimis;

l. In a loom having a warp beam, a friction let-off` to resist movement of the beam, a lever controlling the friction let-off, a support for said lever, loomknock-loff mechanism, and'asmashpreventer to `operate the knock-off mechanism when the shuttle i is improperly boxed, the knock-off mechanismen-4 gaging the lever to move the samej from the support therefor to" relieve the warp beamv of the resistanceoffered bythe letloff. v

2. In aloom, a lay,`shipper' mechanism, a warp beam, tensioning devicestherefor in` cluding afhandi lever, `a supportJ `for said lever, a longitudinally movable member normally in thepathf'of-thelay andfextending substantially parallel.4 to "saidhand levegr',

means to move the member out of the path of i the lay when the shuttle is properly boxed, and a device carried byysaid member to engage the shipper-mechanism to stop the loom and also engage the hand flever to Hex the samelaterally off the support therefor to re# leasethe warp ly boxed. y y

3. In a loom having a warp supply-means movable about and.` axis thereof to supply warp as required by theloom, a friction letoff toA resist movementofthe warp supply means, a smash pr'eventermechanism to cooperate with theshuttle and normally linoperative when the shuttleis properly boxed, and connectionsbetween the `.smash preventer mechanism and the friction let-off inde pendent of the` warp', to release the letofffto relieve the warp-A beam ofV the resistance offered by said friction let-off when oneof the shuttles `is `improperly boxed, thusreleasing the warpfbeam to move onbitszaxis in responseto any demand made by the improperly boxed shuttle.

4. Ina loom havingawarp supply movable about anaxis thereof to `supply warp as required by the loom, a friction let-'ofi' to resist movement of the warp beamV about the axis thereof, a lever to control rtheextent of resistance offered by the frictionletn olf, a smash preventer to cooperate with the shuttleand normally inoperative whenthe shuttle is properly boxed, andmeans independent of the warp operatively connected with the smash preventer to move the lever to friction releasing position when the' smash preventer isoperated `by improper boxing of a shuttle, "thus freleasing the friction and leaving thewarp `beam free when `the shuttle is improper;

to move on its axis to supply any demand for Warp created by the improperly boxed shuttle.

5. In a loom having a Warp beam movable about an axis thereof to supply Warp, a friction device operatively connected to the warp beam to resist movement thereof, a smash preventer to cooperate with the shuttle and normally inoperative when the shuttle is properly boxed, and connections between the Smash preventer and the friction let-off independent of the Warp to release the latter to relieve the Warp beam of the resistance oifered thereby to Warp supplying movement ofthe beam, whereby said beam Will be free to move on its axis to supply an amount of Warp conditional upon the demands of the improperly boxed shuttle.

In testimony whereof I have hereunto af-v fixed my signature.

EDWARD L. LANE. 

